Obs. : 2008-12-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.452e+11
Earth      3.447e+11
Mars       3.431e+11
Jupiter    3.473e+11
Saturn     3.388e+11
Uranus     3.425e+11
Neptune    3.463e+11
Pluto      3.431e+11